Home / 118,987.10-164,116.50-76,505.04

Finding the Fourth Proportional to 118,987.10, 164,116.50 and 76,505.04

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Solution

The fourth proportional to 118,987.10, 164,116.50 and 76,505.04 is: 105,521.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,987.10 : 164,116.50 = 76,505.04 : x
  2. Step 2: Convert to fraction form
    118,987.10/164,116.50 = 76,505.04/x
  3. Step 3: Cross multiply
    118,987.10x = 164,116.50 × 76,505.04
  4. Step 4: Simplify right side
    118,987.10x = 12,555,739,397.16
  5. Step 5: Solve for x
    x = 12,555,739,397.16/118,987.10
  6. Step 6: Final answer
    x = 105,521.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.